T. V. Mandzii

Bio: T. V. Mandzii is an academic researcher from ODESSA. The author has contributed to research in topics: Coordination complex & Hydrogen bond. The author has an hindex of 3, co-authored 8 publications receiving 21 citations.

Synthesis, crystal and molecular structure of [Co(L)3](OH)Cl · H3Ssal) · H2O, where L is benzhydrazide and H3Ssal is 5-sulfosalycilic acid

Abstract: The coordination compound [Co(L)3](OH)Cl(H3Ssal) · H2O (I) (L is benzhydrazide, and H3Ssal is 5-sulfosalycilic acid) has been synthesized and studied by IR spectroscopy and X-ray diffraction. Orange crystals are triclinic: a = 9.948(2) A, b = 12.288(3) A, c = 14.710(3) A, α = 109.39(3)°, β = 95.60(3)°, γ = 110.38(3)°, V = 1668.7(6) A3, Z = 2, space group \(P\bar 1\) Structural units of compound I are complex CoL32+ cations, OH− and Cl− anions, sulfosalycilic acid molecules, and an H2O molecule disordered over two positions and linked to each other by hydrogen bonds. Phenyl rings participate in π-π-stacking interaction with the formation of centrosymmetric dimers.

Malonatobenzhydrazidediaquacobalt(II) hydrate: Synthesis, crystal and molecular structures

Abstract: The coordination compound [Co(L)(Mal)(H2O)2]H2O (I) (L is benzhydrazide, H2Mal is malonic acid) has been synthesized and studied by IR spectroscopy, thermogravimetry, and X-ray diffraction. Crystals are triclinic, a = 7.610(4) A, b = 7.854(2) A, c = 12.751(2) A, α = 75.12(3)°, β = 88.01(3)°, γ = 80.26(3)°, Z = 2, space group \(P\bar 1\). The structure is molecular. The Co2+ atom has a distorted octahedral coordination. The Co-O and Co-N bond lengths are 2.031-2.129(4) and 2.157(5) A, respectively. The endocyclic O1Co1N1 bond angles are 77.3(2)° and 90.0(2)° in the five- and six-membered chelate rings, respectively. Molecules of complex I are linked via a great number of hydrogen bonds. The C…C contacts between phenyl rings additionally strengthen the structure.

Nickel(II) tetraaqua bis(benzoate) tris(phenylacethydrazide) complex [Ni(HL 1 ) 3 ](L 2 ) 2 · 4H 2 O: Synthesis and crystal and molecular structure

Abstract: The synthesis, IR and Raman spectroscopic study, and X-ray diffraction analysis of [Ni(HL1)3](L2)2 · 4H2O (I), where HL1 is phenylacetic acid hydrazide and L2 is the benzoate monoanion, have been performed. The structural units of a crystal of complex I are complex [Ni(HL1)3]2+ cations, (L2)– anions, and crystallization water molecules. The nickel atom is coordinated to the three oxygen atoms at octahedron apices and the three nitrogen atoms of three bidentate chelate (О, N) ligands HL1 in cis,trans-meredianal (fac) conformation. The structural units of a crystal of complex I are bonded by a branched network of О–Н···О and N–H···O hydrogen bonds.

Synthesis, IR-spectroscopic study and crystal structure of tris(benzohydrazide)nickel(II) dichloride dihydrate [Ni(L) 3 ]Cl 2 · 2H 2 O

Abstract: Coordination compound [Ni(L)3]Cl2 · 2H2O (L is benzohydrazide) has been synthesized and studied by IR spectroscopy and X-ray diffraction analysis. According to X-ray diffraction, one of the Cl– ions is disordered over two nonequivalent positions. The crystals are monoclinic, a = 15.423(3) A, b = 9.697(2) A, c = 18.893(4) A, s = 105.99(3)°, space group P21/c, Z = 4. The structural units of the crystal are complex cations [Ni(L)3]2+, in which ligands L are coordinated to the central atom bidentately chelating the metal atoms through the O and N atoms of the hydrazide moiety (Ni–O 2.036(4), 2.051(5), 2.047(5); Ni–N 2.095(5), 2.089(6), 2.097(6) A). The structural units of the crystal are joined together by cation–anion electrostatic interactions and hydrogen bonds, which involve both H2O molecules, both Cl– anions and the N atoms of chelate rings of the complex cation.

Syntheses and Characterization of Coordination Compounds of 3d-Metal 5-Sulfosalicylates with Phenylacethydrazide: Crystal Structure of [Ni(L)3]HSSal · 3H2O (L is Phenylacethydrazide, and HSSal2– is 5-Sulfosalicylic Acid Anion)

Abstract: The complexes of 3d-metal 5-sulfosalicylates with phenylacethydrazide are synthesized: [Co(L)3]HSSal · 3H2O (I), [Ni(L)3]HSSal · 3H2O (II), and [Zn(L)3]HSSal · 6H2O (III) (L is phenylacethydrazide, and HSSal2– is 5-sulfosalicylic acid anion). Compounds I–III are characterized by the methods of chemical analysis, IR spectroscopy, diffuse reflectance spectroscopy, luminescence, and thermogravimetry. Compound II is studied by X-ray diffraction analysis (СIF file CCDC no. 1819696). In the complex cation [Ni(L)3]2+, the nickel atom has a face octahedral coordination mode by three O atoms and three N atoms of three bidentate chelate ligands L. The complex cations, HSSal2– anions, and crystallization water molecules are joined by a branched system of hydrogen bonds. Complexes I–III are luminescent, and complex III exhibits the brightest luminescence.

Sponge-supported monolithic materials of porphyrin covalent organic frameworks for selective recognition, convenient removal and extraction of Cd2+

Abstract: Adsorption is a cheap, energy-efficient, and easy-to-operate method for heavy metal pollution treatment. As highly porous and crystalline polymers, covalent organic frameworks (COFs) hold great promise as the adsorbents of metal ions. Herein, two hydroxyl-functionalized porphyrin COFs (2,3-DhaTph and 2,5-DhaTph) were synthesized, characterized and demonstrated to be good adsorbents of cadmium(II) ion (Cd2+). Via the chemical coordination of abundant phenolic hydroxyls to Cd2+ and the fluorescent response of porphyrin moieties to Cd2+, 2,3-DhaTph realized bifunction of specific optical recognition and highly efficient adsorption of Cd2+. To further simplify the removal operation of Cd2+, bulk monolithic materials ([email protected]) were prepared via the in-situ growth of 2,3-DhaTph or 2,5-DhaTph on the pore wall of a dopamine-treated heat-resistant polyurethane sponge. Compared to the COFs, [email protected] showed faster adsorption kinetics and shorter adsorption equilibrium time due to the interconnected large porous channels and the uniform distribution of thin COF layer on the pore wall. The characteristics of easy operation and good reusability (≥ 6 times) endow [email protected] with great potential in practical applications, more than 99% Cd2+ could be easily removed from water samples by them. [email protected] were also demonstrated to work well for the extraction of various heavy metal ions from polluted food samples (rice and wheat), achieving the detection of these metal ions.

Nickel(II) tetraaqua bis(benzoate) tris(phenylacethydrazide) complex [Ni(HL 1 ) 3 ](L 2 ) 2 · 4H 2 O: Synthesis and crystal and molecular structure

Abstract: The synthesis, IR and Raman spectroscopic study, and X-ray diffraction analysis of [Ni(HL1)3](L2)2 · 4H2O (I), where HL1 is phenylacetic acid hydrazide and L2 is the benzoate monoanion, have been performed. The structural units of a crystal of complex I are complex [Ni(HL1)3]2+ cations, (L2)– anions, and crystallization water molecules. The nickel atom is coordinated to the three oxygen atoms at octahedron apices and the three nitrogen atoms of three bidentate chelate (О, N) ligands HL1 in cis,trans-meredianal (fac) conformation. The structural units of a crystal of complex I are bonded by a branched network of О–Н···О and N–H···O hydrogen bonds.

Synthesis, IR-spectroscopic study and crystal structure of tris(benzohydrazide)nickel(II) dichloride dihydrate [Ni(L) 3 ]Cl 2 · 2H 2 O

Abstract: Coordination compound [Ni(L)3]Cl2 · 2H2O (L is benzohydrazide) has been synthesized and studied by IR spectroscopy and X-ray diffraction analysis. According to X-ray diffraction, one of the Cl– ions is disordered over two nonequivalent positions. The crystals are monoclinic, a = 15.423(3) A, b = 9.697(2) A, c = 18.893(4) A, s = 105.99(3)°, space group P21/c, Z = 4. The structural units of the crystal are complex cations [Ni(L)3]2+, in which ligands L are coordinated to the central atom bidentately chelating the metal atoms through the O and N atoms of the hydrazide moiety (Ni–O 2.036(4), 2.051(5), 2.047(5); Ni–N 2.095(5), 2.089(6), 2.097(6) A). The structural units of the crystal are joined together by cation–anion electrostatic interactions and hydrogen bonds, which involve both H2O molecules, both Cl– anions and the N atoms of chelate rings of the complex cation.

Coordination compounds of cobalt(II), nickel(II), and zinc(II) valerates and benzoates with benzohydrazide

Abstract: Coordination compounds of cobalt(II), nickel(II), and zinc(II) valerates and benzoates with benzohydrazide have been synthesized and characterized by elemental analyses, IR spectra, diffuse reflectance spectra, and thermogravimetric data.

Syntheses and Characterization of Coordination Compounds of 3d-Metal 5-Sulfosalicylates with Phenylacethydrazide: Crystal Structure of [Ni(L)3]HSSal · 3H2O (L is Phenylacethydrazide, and HSSal2– is 5-Sulfosalicylic Acid Anion)

Abstract: The complexes of 3d-metal 5-sulfosalicylates with phenylacethydrazide are synthesized: [Co(L)3]HSSal · 3H2O (I), [Ni(L)3]HSSal · 3H2O (II), and [Zn(L)3]HSSal · 6H2O (III) (L is phenylacethydrazide, and HSSal2– is 5-sulfosalicylic acid anion). Compounds I–III are characterized by the methods of chemical analysis, IR spectroscopy, diffuse reflectance spectroscopy, luminescence, and thermogravimetry. Compound II is studied by X-ray diffraction analysis (СIF file CCDC no. 1819696). In the complex cation [Ni(L)3]2+, the nickel atom has a face octahedral coordination mode by three O atoms and three N atoms of three bidentate chelate ligands L. The complex cations, HSSal2– anions, and crystallization water molecules are joined by a branched system of hydrogen bonds. Complexes I–III are luminescent, and complex III exhibits the brightest luminescence.